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A star is a massive, compact body of plasma in outer space that is currently producing or has produced energy through nuclear fusion. The most familiar and closest star to the Earth is the Sun. Unlike a planet, from which most light is reflected, a star emits light because of its intense heat. Stellar astronomy is the study of stars.

Individual stars differ from each other due to their total mass, their composition, and their age. The total mass determines the course of evolution of a star, as well as its eventual fate. A Hertzsprung-Russell diagram shows the pattern of the temperature of stars against their absolute magnitude, and can be used to determine the overall age of a star and the stage in its evolution. Initially, stars are composed primarily of hydrogen, with some helium and heavier trace elements that determine the metallicity of a star. Over the course of a star's evolution, a portion of the hydrogen is converted into heavier elements through the process of nuclear fusion. Part of the matter is then recycled back into the interstellar environment, where it is used to form a new generation of more metal-rich stars.

Multi-star systems consist of two or more stars that are gravitationally bound, and generally move around each other in stable orbits. When two such stars have a relatively close orbit, their gravitational interaction can have a significant impact on their evolution. For example, a nova occurs when a white dwarf accretes matter from a companion star.

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@craigdanger is rocking out to Rush really better than a porn star riding the sibian (virbating device) while trying to earn website plugs
jsok73 (John Sokolich) Thu, 10 Dec 2009 13:01:03 -0000
@craigdanger is rocking out to Rush really better than a porn star riding the sibian (virbating device) while trying to earn website plugs
Listening to Riding With A Movie Star ♪ L7 http://bit.ly/7jzRsf via @twitbird
_ssakura_ (ssakura) Thu, 10 Dec 2009 07:44:28 -0000
Listening to Riding With A Movie Star ♪ L7 http://bit.ly/7jzRsf via @twitbird
riding the g-star raw tram!!!! been waiting months for this to happen! (yes, i'm serious)
starinmelbourne (star) Thu, 10 Dec 2009 06:14:41 -0000
riding the g-star raw tram!!!! been waiting months for this to happen! (yes, i'm serious)
Where my 6 star bitches @.who pay they own bills, got a great career, riding clean, got children n lookin hella good 4 it, paying their own
FREShazz1887 (jeffrey M.) Thu, 10 Dec 2009 04:31:55 -0000
Where my 6 star bitches @.who pay they own bills, got a great career, riding clean, got children n lookin hella good 4 it, paying their own
I just saw the most amazing shooting star ever!!!!!!! Seriously, it was sooo beautiful...I wish I was riding it in the sky....
donnacdasilva (Donna DaSilva) Thu, 10 Dec 2009 02:38:22 -0000
I just saw the most amazing shooting star ever!!!!!!! Seriously, it was sooo beautiful...I wish I was riding it in the sky....
I'm feeling like a star, you can't stop my shine, I'm loving cloud nine, my head's in the sky, I'm riding solo!;)<3
MBC24 (michael bryan cortez) Thu, 10 Dec 2009 02:37:27 -0000
I'm feeling like a star, you can't stop my shine, I'm loving cloud nine, my head's in the sky, I'm riding solo!;)<3

 
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GameBlitz: Riding Star - Reviewed by James Anthony, Riding Star is a nice, gentle game that is fun but riding events do add a bit of competitiveness to keep the interest up.

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